Machine for making chaplets



R. P. THRONE.

MACHINE FOR MAKING CHAPLETS.

APPLICATION FILED NOV. 5,1919'.

2 SHEETS-SHEET l.

Patented July 25, 1922.

R. P. THRONE.

MACHINE FOR MAKING CHAPLETS.

APPLICATION FILED Nov. 5, I9I9.

Patented July 25, 1922.

2 SHEETS-SHEET 2.

ROBERT IP. THRONE, OF SYRAGUSE, NEW YORK.

MACHINE FOR MAKING CHAPLETS.

ings, is a full, clear, and exact description.

'This .invention relates to certain improvements in the method of and apparatus for making melders chaplets of the perforated sheet metal tubular type for positioning the core 'in t-he mold and for venting the gases therefrom during the introduction ofl the molten metal. K i y The main object of my invention is to successively perforate, feed, cut, kand bend the chaplets into the desired form from a continuous strip of sheet metal in practically one and the same operation, whereby to greatly expedite the Work, increase the output, and at the same time reduce the cost of production and labor incidental thereto.

Another object is to provide a. simple, practical, and eiiicient mechanism which may be attached to any standard form of punch press for producing those results.

Other objects and uses relating to specific parts of the machine will be brought out in the following description:

Figures 1 an d 2 are similar sectional views of a portion of the machine embodying the features of my invention in which the sheet metal stock strip is advanced to the position to be perforated and formed, the punch and forming die beingin its normal up position while in Figure 2 the die has assumed a position to sever thestrip for a chaplet and to partially form the same While the perforating punches are about to enter the underlying portion of the strip for the next succeeding chaplet. n

Figure 3 is a similar sectional view With the dies inposition Vfor completing the prevously perforatedand severed chaplet and for perforating the metall strip for the next succeeding chaplet,the main die being shown as attached to a portion of the plunger of a punch press while the metal strip yis shown as coming from a reel.

Figure 4 is a perspective view of one of the completed chaplets. Y

The method of making these chaplets consists in feeding a continuous strip of metal endwise against a suitable stop, then sever Specification of Letters Patent.

Patenten July 25, ieee.

4 Application filed November 5, 1919. Serial No. 335,918.

.ing a definite length of said strip from the stock and. simultaneously7 bending it around a suitable form and at the same time perfo rating an adjacent portion of the same strip for the next succeeding chaplet, then Withdrawing the perfor-ating and forming means and removing the completed chaplet, and again feeding the strip against the stop ready for a repetition of the perforating and vforming operation.

The apparatus illustrated for makingi these chaplets comprises a main supporting bed 1 upon which is mounted a hardened ymeta] die 2- having a plurality of rows of vertical apertures -3 symmetrically arranged within a rectangular space Within the margins of the die block -2 in uniformly `spaced relation, the upper face of said die block being substantially flat and horizontal.

This die block issubstantially. rectangular and is lirmlyA set or mounted in a recess f--f in the upper portion of the bed -l-, so that its vupper inner corner may form `a shearing edge to cooperate. with a kportion of the vertically moving plunger presentljiv described.. in shearing or severing avportion of the metal strip, as which is to form the chaplet. y

The metal strip A is fed from a reel Bf at one end of the base -l* andpasses horiwont-ally through a guide-Way -5- in said base, said guide-Way being of substantially the same Width as the strip A and is regis tered with the upper surface of the die block -2- to enable the strip to be fed endrvise across the surface of said block Without excessive friction. k

The base -lis also formedwith a vertical opening -6- just in front of the die block 2* and of suiiicient length and Width 'to easily receive the perforated and severed flat blank from which the chaplet is to be formed` the length of the blank being deter-r mined by a stop 7- which is secured to the upper face of the base 1" a distance .from the inner face of the dieiblock -2-y of the strip A to allow the forward end of the blank to be folded under the bar -S and against the opposite `end of the blank as shown in Figure et.

The bar 8* is preferably rectangular in cross section, but of greater vertical height than its width lengthwise of the machine and determines the tubular form Aof the chaplet which is bent around the same as will be hereinafter more `fully explained. A reciprocatory die or plunger -9- is movable horizontallyand lengthwise of the machine along a suitable guide-way -10-- in the base -1 for bending the advance end of the blank under the lower face of the cross-bar -`8, the inner end of said plunger -,-9,- being preferably rectangular in form has its upper face movable in a plane a slight distance below Vthat of the lower face of the bar -8- corresponding to the thickness ofthe metal of which the chaplet is formed.

An upper dieblock --l1- is suitably7 secured in a recess 12m of a supporting plate -13-` which, in turn, is secured to a vertically reciprocating plunger lll-4, whereby similar motion is imparted to the upper die-block 11.

A portion -8 of the die -11- extends below the remaining portion thereof and is preferably rectangular in horizontal sect-ion and of' substantially the same size as the opening into which it is adapted to move, so that the lower corner at the upper end face thereof may have shearing coaction with the adjacent inner end face of the dieblock -2- for severing the previously perforated chaplet blank from the main body of the strip A as the plunger -9- descends from its normal position.

This die -14- is also provided with a substantially rectangular recess -lopening from its lower face and registering with the cross-bar -S-, the` width of said recess being slightly greater than that of the crossbar corresponding to the thickness of the metal at each side of said bar so that when theplunger is brought `down the outer end wall ofthe recess which projects downwardly slightly beyond the opposite end wall will first shear Ithe blank from the main body and fold the corresponding end downwardly against the adjacent face of the bar #-8- while the opposite wall will perform a similar function, in folding the corresponding end of the blank downwardly across the adjacent face of said bar. A i

The Vdistance between the adjacent faces of the die-block -2- and cross-bar -8- is ,slightly greater than `the vertical width of said bar, while the distance betweenthe adjacent faces of' the stop -7- and bar -8* is also greater than the verticalk width of the c ross-bar,`whereby7 the ends of the blank, when folded down across the opposite the protruding opposite end of said blank,

thus completing the tubular chaplet, as a. The ,means for effecting the reciprocatory ,moveinentof .the plunger -9- consists of la bell crank `lever -16- pivoted at `-17-` and having one arm engaged in an aperture 1S- in saidplunger, and its other end Connected by a `retracting spring 1Q-jn t o a suitable anchorage -20- on the vertlcally` movable plate -13-. An adjustable stop-screw h`2(lis mounted on the `plate -13` and engaged with the 4upper edge of S5 the longer arm of the lever flefor rocking said lever against the action `of the retracting springas the plunger 14tdecends.` thereby moving the plunger f9- inwardly to produce the final folding operation of the blank (L.

` punch die -2- ismounted upon the block ll-to cooperate with the lower die --2- in perforating the interposed portion of ythe sheet metal strip A and Ivfor this purpose is provided ,with a series of punches -2- corresponding in number to the number of apertures `-f3- and registering therewith so as ,to ireadilyenter the saine for punching corresponding holes in the strip A as the plungerf-lfdescends n In order that the cutting resistance may not be excessive or ,tool abrupt, the lower` ends of sonne of the punches V--2- are arranged at different distances from the adjacentY faces ofrthe die -2- so as to enter the strip A one in advanceof the other, and therefore the `cutting resistance is considerablyless than would be `the case if all the punches Ienteredthe sheet metal at the same time, Athereby materially reducing the power reqiiired for the punchingjopelration.

The punches of the male dieand apertures of the `female `die iare evenly ,distributed over a rectangular area slightly less than that of the sheet metal `Strip which is to form the blank and in such manner that ,the perforations will all be ywithin the marginal edges of said blank, :thereby leaving said edges Msub stantiallysmooth `and straight, which enables ,the chaplets 1to be more accurately ipositioned yin jthejmachine.,

' The rparts 72% and -2- constitute what `rnay be termed Qthe male and female j punch dies respectively, while the. vparts --qf `and T8Q-may be termedthe male and female forming diesand the part -9- a supplemental forming die, the outer end face mnthe l`die ;SL-` being movable .verticallygaelpss 'the ,inner and .face of the die 180 insalate 2- so that the lower outer corner as `-2l-' may constitute a slm-airing edge 'cooperating with thei'ipperl inner corner oi' the die -2--- to sever thepre'viously perforated blank from the mainv body of the strip Af Mounted upon the base #1" directly above the punching die -2-- is a guideplate 'forming with 'the main body of the base a. lengthwise guide *23- and having a series ot vertical guide openings 24- i'or the punches 52- itor the purpose of steadyin;l` the punches as they are forced through the sheet metal` strip A while the plate 92m serves to prevent upward 'displaccluent olf the strip as the punches are withdrawn therefrom atterthe 'periforating operation.

Operation..

lVhen the strip is iirst 'lfedinto the machine the die A13-- is lowered to the posi.- tion. shown in Figure 2 which brings the outer endv ita-ce olfy the die -SL- across the guide-way Q3- to 'form a limiting stop against which. the. advance rend of the strip abuts, wl'iereupon the dowiiwar'd movement t the `plunger is Continued tor'the purpose oit perioratinp the vportion of the strip underlying' thepunches -2-. y

The plunger is then raised tothe limit ot its stroke as shown: in Figure 1,'whcreup`on the strip if-i. is `fedjtorward'until its adrance end engages i the st-op *W7-,5 thus bringing the perforated portion ol' the strip directly over the forming die -8`-. The plunger -l-lis then brought downward to cause Lthe die -S- to liol'd the' ends of; the blank awupon the upper vface and against the oppositeY upright sides of' the die -8-, which .brings thecndot the blank nearest 'the supplementary some distance below the lower Ytace oit the die ---S-- and into the path olE said supplemental die which latter remains in its extreme outward position until the ends of the blank a have been folded against the opposite upright taces oli die F53-, whereupon the lever -16- will be operated by the engagement o'fi the adjustable screw 20- therewith to force the supplemental die 9- inwardly to 'fold the adjacent end out the blank a across the under side of the die -8-.

During this 'formation oil; the perforated blank around the die --8- the punching dies are brought into position to perforate the interposed portion of the strip A in the partial formation of another perforated blank.

The plunger 1S- with the movable dies -2- and 8Lw thereon is then raised to the position shown in Figure l, thus releasing the completed chaplet which has been 'formed on the die -8- and allowing it to be removed therefrom either by hand or by any other suitable means not necessary to herein describegexcept that itis to be understood that one ond of the die 8M is unsupported to permit the removal of the completed chaplet'therefrom byendwise sliding movement.

)is vsoon asthe die-lis lifted to the position shown in yFigure l, the strip A maybe againfadvanced against the stop ready for the repetition of the operations previously described, these operations being coirtnued in more or less rapid succession as long as the vstrip stock is available or until the. required output has been reached.

`What claim is 1. In a machine of the character described, the combination of a supporting bed having a iemale punching die, a forml ing-die anda horizontal longitudinally eX- tending guide, all arranged in sequence along the bed, the female punchingdie being provided with a group of parallel vertical openings and a guide-way extending horizontally across said openings for receivingthe work, a plunger movable vertically toward and 'lfroln the supporting bed and provided with a male punching die and a forming-die arranged inseq'uence lengthwise of the bed, the male punchingtdie having a group of punches vertically alinedwith the openings in the' female' die and movable across the work guide as the plunger is lowered, said female'punching'die andthe openings therein extending above the'work guide to form guides riorthe punches, the supporting bed and plunger being-provided with cooperating bearing members in a vertical plane between the punching dies and said formingdies, a supplemental plunger slidable in the first named horizontal. guide to and Jfrom a position beneath the forming-die on the bed and toward and from the female die, and means actuated by 'theiirst named plunger when moved toward the bed for moving the supplemental plunger toward the 'female die.

2. In a machine of the character described, the combination of a supporting bed having a female punching die, a forming-die and a horizontal longitudinally extending guide, all arranged in sequence along the bed, the 'female punching Adie beingprovided with a `-group oi parallel vertical openings and a guide-way extending horizontally across said openings for receiving the work, a

plunger movable vertically toward and from therein v`extending above the Work guide to form guides for the punches, the supporting bed and plunger being provided `With cooperating shearing members in a vertical. plane between the punching .dies and said forming-dies, a supplemental plunger *slidable in the first named Vhorizontal guide to and from a position beneath :the formingdie on the bed and toward and from the female die, and lmeans actuated by the first named plunger `when moved toward the bed for moving .the supplemental plunger toward the `female die, said means including a lever pivotally mounted on the supporting bed and an adjustable stop mounted on the first named plunger.

3. In a machine of the character described, the combination of a stationary support, a female die mounted on the support and provided with a group of parallel verticalopenings and .a Work guide extending horizontally across said openings between the `lower and upper yends thereof, a work stop ,on the support in alinement with the work 4guide and some distance in advance of the female punching die in the direction of feed of the Work, a male forming-die mounted on the support between the female `punching die and stop and having its 4upper face disposed in substantially the same horizontal plane as that of the Work vguidea plunger movable vertically toward and from vtheisupport, a male punching die mounted on lthe plunger and provided with a vgroup or punches .in verticallyalinement With the. openings is the female punching die and movable in said openings across the Work guide as the plunger is low-ered 4for perforating the 4Work in sai-d guide, a femaler forming-die Vmounted on the plunger to cooperate With the male forming-die Vfor folding the Work thereon, a supplemental plunger slidable in a horizontal lplane upon lthe support toward and from the femalepunching die and beneath the male forming-die for Aadditionally folding the Work upon the ,last .named die, and means actuated by the first named plunger when lowered for forcing ,the supplemental plunger toward the female punching die. 4

c L In a machine of the character described, the combination of a stationary support, a female die mounted on the sup-port and provided with'a group of parallel vertical openings and a Work guide extending horizontally across said openings between the lower and upper ends thereof, a `Work stop `on the support in alinement with the Work guide and some distance in advance of the female punching die :in the direction of feed of the Work, a male forming-die mounted on the support between the female punching die and stop and having its upper face disposed in substantially the same horizontal plane as that of the Work guide, a plunger movable vertically toward and from the support, a male punching ldie mounted on the plunger and provided with a group of ypunches in vertically alinement with the openings in the female punching die and movable in said openings vacross the Work guide Las the .plunger is lowered for perforating .the work in said guide, a female forming-die mounted on `the plunger to cooperate With'the male forming-die for folding the work thereon, a supplemental plunger slidable in ahorizontal plane upon the support .toward `and from the female punching die and `beneath the male forming-die for additionally folding the Work upon the last named die, and means actuated by the first named plunger when `lowered vfor forcing the supplemental plunger toward the female punching die, said means including a lever fulcrumed on the support `and operatively conneeted to the first named plunger. ,In Witness whereof I have. hereunto set my hand this 24th day ofOctober, 1919.

ROBERT P. THRONE. Witnesses:

E. CHASE, yM. MoGANN. 

